title: Malignant fibrous histiocytoma arising from a calcifying enchondroma--a case report.
abstract: A man, 79 years of age, developed a malignant fibrous histiocytoma which arose in relation to a calcifying enchondroma of the distal femur. Radiographs showed a fracture through an intensely calcified bony tumour with no bony destruction. The clinical diagnosis was a dedifferentiated chondrosarcoma. Histology showed an anaplastic sarcoma with calcified tissue showing extensive areas of necrosis and degeneration. No chondrosarcomatous foci were found.
authors.affiliation: Department of Pathology, Dokkyo University School of Medicine, Tochigi, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: K
authors.initials: K
authors.lastname: Tamai
authors.forename: K
authors.initials: K
authors.lastname: Honma
authors.forename: M
authors.initials: M
authors.lastname: Yamato
authors.forename: K
authors.initials: K
authors.lastname: Saotome
mesh_terms: D000368:Aged; D002114:Calcinosis; D002812:Chondroma / Q000000981:diagnostic imaging / Q000473:pathology*; D005264:Femoral Fractures / Q000209:etiology; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D005598:Fractures, Spontaneous / Q000209:etiology; D018219:Histiocytoma, Benign Fibrous / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography